The countercurrent multiplier recaptures ________ and is based on fluid flowing in the ________ direction in two adjacent tubules
A) potassium; same
B) sodium; opposite
C) sodium; same
D) calcium; opposite
E) calcium; same
B
Anatomy & Physiology
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________ is a growth factor that stimulates both the production of megakaryocytes in the bone marrow and the subsequent formation of platelets.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
Shafts of hair are composed of
A. dead dermal cells. B. dead epidermal cells. C. living epidermal cells. D. living dermal cells.
Anatomy & Physiology
The ________ constrictors are throat muscles essential for swallowing.
Fill in the blank(s) with the appropriate word(s).
Anatomy & Physiology
The motor pathway of the autonomic nervous system usually involves ________ neurons.
A. no B. three C. two D. one E. four
Anatomy & Physiology